code: def mota(result_dict):
      num = (
          num_misses(result_dict)
          + num_sw(result_dict)
          + num_fp(result_dict)
      )
      denum = num_objects(result_dict)
      return 1 - num / denum
  
file_path: gluon-cv/scripts/tracking/smot/helper.py
imports: import motmetrics
  import numpy
  import os
  import sys
label_desc: Use image node_id 4 for calling a global function with example usage: mota(result_dict) and returns: unknown